Puzzle.



W. B. WATKINS. PUZZLE. APPLICATION FILED JULY 27, 1914.

1,1 11,337, Patented Sept. 22, 1914.

Aw-N55525: W IIHVEPITDR: i 6 u 22AM 6'. WM a e. m 1

HENOR RIS PETERS 00.. PHOIO-LITHO. WASHINGTON, D. c.

To all whomit may-concern 7 Be it known that I, WILLIAME. oi" Boston, in the county of Suffolk and State of Massachusetts, a citizen of the United States, have invented a newhand useful Improvement in Puzzles, of which the following is a specification.-

somewhat, but in its preferred. formit commg a clrcumierential groove and anutproprises an ordinary bolt 61' threaded ro d havyided with means whichnormally engage said groove so that said nutcannot be moved 1n either direction andyet which when acted upon by centrifugal force will flyoutfrom said groove and unlock said nutaj This, which may preferably be'coupledwith a. re

leasable member free to move upon the bolt but removable only when the groove is un covered, comprises my invention.

understood by reference to the drawings, in which i I i .Figure 1 is a side elevation. Fig.2 is a side elevation of the bolt, thenut being in section andin locked position. Fig. 3 is a similar view, the nut being in unlocked position, and the releasable member in position to be removed from the bolt. Fig. 4 is a sec-f tion on line &-4 of 2, and Figs. 5 and 6 are respectively sections online s 51-5 and 56 of Fig. 3. Q-

A is the bolt having the usual as n is provided with threads a whichbegin the" usual distance fromthjehcad. At the other end of the bolt the'threads are flattened as at a after the nut is screwed onto the 'bolt so as to prevent its removal, i 1 .l

The bolt is turned .down nearihe middle of its threade'dportion as at a to provide'a circumferential groove which serves as one member of the lock by which the nut 'is locked and also provides "a neck a which enables the removal ofthe removable memberri i Bis the a which isthreaded on its inf,-.-terior' to turn on the bolt'in the ordinary manner. As shown it is hexagonal in shape and each of its six faces is bored from the. exterior tothe interior. In each passage so [formed isplaced a ball or shot I) andthe outer end of each passage is closed by a plug 6*, thus leaving a chamber 71 sufiiciently that whenthe shot lie in the groove their large to'continu'e the entire shot (see Fig. .5) The depth ofthe groove a should be such I of Iietters fateiitl n uwa a filed zmi aaisi ikseriarua'sssgom .My invention in its details. may be varied Batented 22; 191 4.

' upper surfaces. willwengage thenut and prepventwit itrom being turned ,cin e therdirection far enough to uncover the groove.

it will be seen from Fig. 4 that the upper balls rest on the neck a and lock the nut.

It the nut is oscillatedrapidly these upper balls will fly outwardly into their chambers Z1 and. thus be clear of the walls of the groove a so that by continuing theturning ofthe nut while the upper balls are in'their chambers the nutmaybe caused to travel along the bolt in either direction as the case may be. By upper balls I mean those which are resting in the groove for the time being. Gravity will hold the other balls in theirchambers. j

In addition I provide a releasable member G which as shown iscircular, its ends 0, however, being separated, sufliciently to slip over the neck a which is formed by the My invention in its preferred form will be groove a. The member 0 may, however, be otherwise shaped if desired. To release the niomber .C from its positions shown in Figs. 1 and 2 the nut is oscillated with SllfilClBIlt rapidity to throw out the balls b from the groovea into the chambers b as above described.

1 I have described the parts?) as shot or balls, but it will be understood thatwhile the'locking member is preferably sphericalin shape this may be other shapes if desired. I have shown my releasable member as a wire, but it may be a segmental washer or 3 other shaped piece having aspace WllICl'I' may pass theneck a and of course it must be incapable ofpassing over the head of the bolt or over the nut. It need notnecessarily be round. I

The shape of the chambers in the nut may be altered or a single annular chamber may be substituted for them without departing from my invention.

vWhat I clalm as my 1nvention is:-

. 1. The puzzle above described comprisinga threaded bolt provided with a circumferential groove, a nut having allimited movement along said bolt, and means movable radially within said nut adapted normally to lie in said groove. I

a threaded boltprovided with a circumferential groove forming aneck and a nut provided with chambers, locking members located in said chambers and adapted to move radially therein into said groove to lock said maand to be'thrown outwardly therefrom v 10s 2-. The puzzle above, described comprising upon the l apid fotatiolrl of said nut to unbeleasable nierhbe r adapted normall f to slide lock said nut. v e on said bolt and be released When-register- 1O 3. The puzzle above described comprising ing'w'ith said grobve.

- a threaded bolt rovided with a circumfer- I 5 ential groove, a gut having a limited move- 3 WILLIAM W ment alengsaidbolt, and means movable VV itnes ses: radially within said nut adapted normally Gr'EQiiGE O. G. CONER, vt0 lie in said groove, in combination with a i ,M'. F A-HERTY.

.copi es 01 this patent may be obtained for fivecent s each, by addi*essing the dominis sion er qf latnts, I I 3 Washington, D. C. i i 

